perf tools: Refactor all_tids to hold nr and the map
So that later, we can pass the thread_map instance instead of
(thread_num, thread_map) for things like perf_evsel__open and friends,
just like was done with cpu_map.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 3f4a431..6b9146c 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -81,8 +81,7 @@
static bool no_aggr = false;
static pid_t target_pid = -1;
static pid_t target_tid = -1;
-static pid_t *all_tids = NULL;
-static int thread_num = 0;
+static struct thread_map *threads;
static pid_t child_pid = -1;
static bool null_run = false;
static bool big_num = true;
@@ -175,7 +174,7 @@
attr->enable_on_exec = 1;
}
- return perf_evsel__open_per_thread(evsel, thread_num, all_tids);
+ return perf_evsel__open_per_thread(evsel, threads->nr, threads->map);
}
/*
@@ -200,7 +199,7 @@
u64 *count = counter->counts->aggr.values;
int i;
- if (__perf_evsel__read(counter, cpus->nr, thread_num, scale) < 0)
+ if (__perf_evsel__read(counter, cpus->nr, threads->nr, scale) < 0)
return -1;
for (i = 0; i < 3; i++)
@@ -298,7 +297,7 @@
}
if (target_tid == -1 && target_pid == -1 && !system_wide)
- all_tids[0] = child_pid;
+ threads->map[0] = child_pid;
/*
* Wait for the child to be ready to exec.
@@ -353,7 +352,7 @@
} else {
list_for_each_entry(counter, &evsel_list, node) {
read_counter_aggr(counter);
- perf_evsel__close_fd(counter, cpus->nr, thread_num);
+ perf_evsel__close_fd(counter, cpus->nr, threads->nr);
}
}
@@ -693,6 +692,15 @@
}
}
+ if (target_pid != -1)
+ target_tid = target_pid;
+
+ threads = thread_map__new(target_pid, target_tid);
+ if (threads == NULL) {
+ pr_err("Problems finding threads of monitor\n");
+ usage_with_options(stat_usage, options);
+ }
+
if (system_wide)
cpus = cpu_map__new(cpu_list);
else
@@ -704,27 +712,10 @@
return -1;
}
- if (target_pid != -1) {
- target_tid = target_pid;
- thread_num = find_all_tid(target_pid, &all_tids);
- if (thread_num <= 0) {
- fprintf(stderr, "Can't find all threads of pid %d\n",
- target_pid);
- usage_with_options(stat_usage, options);
- }
- } else {
- all_tids=malloc(sizeof(pid_t));
- if (!all_tids)
- return -ENOMEM;
-
- all_tids[0] = target_tid;
- thread_num = 1;
- }
-
list_for_each_entry(pos, &evsel_list, node) {
if (perf_evsel__alloc_stat_priv(pos) < 0 ||
perf_evsel__alloc_counts(pos, cpus->nr) < 0 ||
- perf_evsel__alloc_fd(pos, cpus->nr, thread_num) < 0)
+ perf_evsel__alloc_fd(pos, cpus->nr, threads->nr) < 0)
goto out_free_fd;
}
@@ -752,5 +743,7 @@
list_for_each_entry(pos, &evsel_list, node)
perf_evsel__free_stat_priv(pos);
out:
+ thread_map__delete(threads);
+ threads = NULL;
return status;
}